Array Assistance Please

[thylath]

Good Evening,
I am having problems with the code below, what I need to do is have the array show 15 lines of value (alpha[0] through alpha[14], then the next set of 15 and so on, on its own line. When I run the code it loops indefinitely. Any help that can be offered is greatly appreciated, I have put the entire program after the code I need help with.

Verbatim directions: Output the value of the alpha so that 15 components per line are printed.

Thank you in advance,

for (counter = 0; counter < 50; counter +15)//h
	{
		cout << alpha[counter] << alpha[counter + 1] << alpha[counter + 2] << alpha[counter + 3] << alpha[counter + 4] << alpha[counter + 5] << alpha[counter + 6] << alpha[counter + 7] << alpha[counter + 8] << alpha[counter + 9]
		<< alpha[counter + 10] << alpha[counter + 11] << alpha[counter + 12] << alpha[counter + 13] << alpha[counter + 14] << endl;//h
	}

This is the code in its entirety

#include <iostream>

using namespace std;

const int SIZE = 50;
static int alpha[SIZE]; //a
int counter = 0;
int main()
{
	for (counter = 0; counter < SIZE; counter++)//b
	{
		alpha[counter] = -1;//b
	}
		
	cout << alpha[0] << endl;//c
	alpha[24] = 62;//d
	alpha[9] = 3 * alpha[49] + 10;//e

	for (counter = 0; counter < SIZE; counter++)//f
	{
		if (alpha[counter] % 2 == 0 || alpha[counter] % 3 == 0) //f
			cout << alpha[counter] << endl;//f
	}

	cout << alpha[49] << endl;//g

	for (counter = 0; counter < 50; counter +15)//h
	{
		cout << alpha[counter] << alpha[counter + 1] << alpha[counter + 2] << alpha[counter + 3] << alpha[counter + 4] << alpha[counter + 5] << alpha[counter + 6] << alpha[counter + 7] << alpha[counter + 8] << alpha[counter + 9]
		<< alpha[counter + 10] << alpha[counter + 11] << alpha[counter + 12] << alpha[counter + 13] << alpha[counter + 14] << endl;//h
	}
	
	for (counter = 0; counter < SIZE; counter ++)//i
		if (alpha[counter] % 2 == 0)
		{
			alpha[counter] = alpha[counter] + 1;//i
		}

	for (int diffArray[SIZE], counter = 0; counter < SIZE; counter++)//j
	{
		diffArray[counter] = alpha[counter] - alpha[counter - 1];//j
	}
	system("pause");
	return 0;
}

[Ganado]

The point of arrays is to not have to repeat yourself 15 times :)

Try replacing lines 27-30 with this, let me know if that helps:

for (int i = 0; i < 50; i++)
{
	cout << alpha[i];
	if (i % 15 == 14)
		cout << '\n'; // New line every 15 elements
}

PS: Avoid global variables like what you have on lines 5-7. Move those declarations into main().

PPS: The reason it loops indefinitely is because your for loop had (counter = 0; counter < 50; counter +15) "counter + 15" doesn't do anything. You'd need to assign it. But this is not the right approach, because you'd still be going out of bounds of your array unless 50 is divisible by 15 (it's not).

[Ganado]

Also, careful here

	for (int diffArray[SIZE], counter = 0; counter < SIZE; counter++)//j
	{
		diffArray[counter] = alpha[counter] - alpha[counter - 1];//j
	}

counter = 0 at the start, so you're accessing alpha[-1]. You probably want to start at counter = 1.

[thylath]

Thank y'all very much, that solved the problem!